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impeccably + adjective
impeccably 常放在形容词或分词前，强调达到完美标准。
She was impeccably dressed for the interview.
她面试时穿着无可挑剔。
完美地；无瑕疵地；无可挑剔地
先理解核心含义，再看它在真实句子里的用法。
完美地；无瑕疵地；无可挑剔地
impeccably
She was impeccably dressed for the interview.
她面试时穿着无可挑剔。
完美无瑕地
In a perfect or flawless manner.
She was impeccably dressed for the interview.
她面试时穿着无可挑剔。
The pianist played the sonata impeccably, without a single mistake.
钢琴家完美地演奏了这首奏鸣曲，一个错误都没有。
His manners are impeccably polite, even in difficult situations.
即使在困难的场合，他的举止也礼貌得体、无可挑剔。
impeccably 常放在形容词或分词前，强调达到完美标准。
She was impeccably dressed for the interview.
她面试时穿着无可挑剔。
常用动词有 behave、perform、act 等，表示行为或表现毫无瑕疵。
The team performed impeccably throughout the match.
整个比赛期间，团队表现完美无瑕。
Not this
She speaks English impeccable.
Use this
She speaks English impeccably.
impeccable 是形容词，不能修饰动词 speaks；修饰动作或方式须用副词 impeccably，意为“完美地、无可挑剔地”。
Not this
His work is impeccably.
Use this
His work is impeccable.
impeccably 是副词，不能放在系动词 is 之后作表语；描述主语 His work 的性质须用形容词 impeccable。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
穿着无可挑剔的；衣着完美的
She arrived at the gala impeccably dressed in a black evening gown.
她穿着一件黑色晚礼服出现在晚会上，衣着无可挑剔。
举止得体的；行为无可挑剔的
The students were impeccably behaved during the museum visit.
学生们在参观博物馆时表现得无可挑剔。
一尘不染的；非常干净的
The kitchen was impeccably clean after the deep cleaning.
深度清洁之后，厨房一尘不染。
维护得无可挑剔的；保养极好的
The historic garden is impeccably maintained by a team of volunteers.
这座历史悠久的园林由一群志愿者维护得无可挑剔。
组织得井井有条的；安排得无可挑剔的
Her desk is always impeccably organized, with every document in its place.
她的办公桌总是井井有条，每份文件都有自己的位置。
时机把握得恰到好处的；时间安排得无可挑剔的
His joke was impeccably timed and made everyone laugh.
他的笑话时机把握得恰到好处，逗得大家哈哈大笑。
Use impeccably naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记忆：把 impeccably 联想成 im-（不）+ peccable（有瑕疵的），即做事毫无瑕疵；想象白衬衫上找不到一点污渍，举手投足都完美利落。
语域：formal 常见场景：formal writing、public speaking、performance reviews 通常用于较正式或书面化的语境，多用来强调仪表、言行或工作质量等无可挑剔；日常口语中也可以用，但整体语气偏正式。
These words share the final spelling '-bly' and end with the sound /bli/ (or /əbli/ in the unstressed final syllable). They are good spelling–sound matches for the ending of 'impeccably'. However, none of them rhymes with 'impeccably' or with each other, because the stressed vowel and following consonants are different. Be careful: it is the ending /bli/ that matches, not a full rhyme; also, do not confuse '-bly' with '-ply' words like 'apply' (/əˈplaɪ/) and 'reply' (/rɪˈplaɪ/), which end in /plaɪ/.
Dictionary facts from ECDICT, OCTANOVE, WIKTIONARY.